Contribution of non-pollen palynomorphs to reconstructions of land-use changes and lake eutrophication: case study from Lake Jaczno, northeastern Poland

Weisbrodt, Dawid; Enters, Dirk; Żarczyński, Maurycy; Poraj-Górska, Anna Izabela; Tylmann, Wojciech

doi:10.1515/limre-2016-0027

Cited by 7 publications

(5 citation statements)

References 43 publications

(40 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lake Jaczno has three permanent inflows and one outflow (Figure 1b and c). Additionally, several periodic streams supply the northern part of the lake (Figure 1c; Butz et al, 2017; Poraj-Górska et al, 2017; Weisbrodt et al, 2016). Lake Jaczno is a hard-water, mesotrophic lake with a total surface area of 0.41 km 2 .…”

Section: Study Sitementioning

confidence: 99%

“…This study is of Lake Jaczno, located in northeast Poland. Sediments of this lake have been studied in detail by several authors (Butz et al, 2015(Butz et al, , 2017Gałka et al, 2019;Makri et al, 2021;Poraj-Górska et al, 2017;Weisbrodt et al, 2016), revealing an excellent varve record, which combined with a well-documented human impact history in this region yields a unique opportunity for further investigations supported by available data.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tracking fire activity and post-fire limnological responses using the varved sedimentary sequence of Lake Jaczno, Poland

et al. 2022

Self Cite

View full text Add to dashboard Cite

Long-term paleofire perspectives provide key information on natural and human-derived land cover changes. The last few millennia are crucial to understanding the future of wildfire threats, since the increasing global temperatures are expected to have an impact on regions previously assumed to not be endangered. In this study we investigate the interplay between changing climatic conditions, land cover transformation, fires, and human activity based on the first 1750-year-long macrocharcoal record derived from varved sediments of Lake Jaczno, located in northeast Poland. The study is supported by macrocharcoal morphotype analysis, pollen and historical data, and statistical analysis, which revealed that in the vicinity of the lake both low- and high-intensity fires may have occurred. Most of them were set by humans, but in some periods biomass burning was favored by droughts or even derived by natural causes (i.e. lightning). Human-induced fires are especially evident between AD 1081 and 1283. This period corresponds to the peak activity of the Jatvings tribe in the region and the related deforestation for agrarian purposes. Fire combined with human activity and deforestation in the area impacted the limnological processes increasing primary productivity and shifts in water mixing regime.

show abstract

Section: Study Sitementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tracking fire activity and post-fire limnological responses using the varved sedimentary sequence of Lake Jaczno, Poland

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…5). Brown siliceous algae are well adapted and tolerant algae species that thrive in oligotrophic conditions in symbiosis with other algae species and bacteria (Bird and Kalff, 1986;Wetzel, 2001). Similar observations of algae composition were made in Lake Peipus (Tõnno et al, 2019;Estonia) and Lake Łazduny (Sanchini et al, 2020;NE Poland).…”

Section: Low Trophic Levels With a Deep Oxic-anoxic Boundarymentioning

confidence: 53%

“…1c). The lake is surrounded by peatlands and forests dominated by birch, alder and spruce (Weisbrodt et al, 2017). The climate of the region is continental with a mean annual temperature of 6.8 • C and mean annual precipitation of 600 mm (IMGW-PIB, 2017).…”

Section: Study Sitementioning

confidence: 99%

Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

Makri

Lami

et al. 2021

Biogeosciences

Self Cite

View full text Add to dashboard Cite

Abstract. Global spread of hypoxia and less frequent mixing in lakes is a major growing environmental concern. Climate change and human impact are expected to increasingly deteriorate aquatic ecosystems. The study of processes and drivers of such changes in the past provides a great asset for prevention and remediation in the future. We used a multiproxy approach combining high-resolution bulk pigment data measured by hyperspectral imaging (HSI) with lower-resolution specific chlorophyll types and carotenoids measured by HPLC to examine Holocene trophic state changes and anoxia evolution in the meromictic Lake Jaczno, NE Poland. A redundancy analysis (RDA) including pollen-inferred vegetation cover, temperature and human impacts provides insight into specific conditions and drivers of changing trophic and redox states in the lake. Anoxic and sulfidic conditions were established in Lake Jaczno after initial basin infilling 9500 years ago. Until 6700 cal BP, lake trophy was relatively low, water turbidity was high and green sulfur bacteria (GSB) were abundant within the phototrophic community, suggesting a deep oxic–anoxic boundary and weak stratification. The period between 6700–500 cal BP is characterized by constantly increasing lake production and a gradual shift from GSB to purple sulfur bacteria (PSB), suggesting a shallower oxic–anoxic boundary and pronounced stratification. Yet, the presence of spheroidene and speroidenone in the sediments indicates intermittent anoxia. After 500 cal BP, increasing human impact, deforestation and intensive agriculture promoted lake eutrophication, with a shift to PSB dominance and establishment of permanent anoxia and meromixis. Our study unambiguously documents the legacy of human impact on processes determining eutrophication and anoxia.

show abstract

“…1c). The lake is surrounded by peatlands and forests dominated by birch, alder and spruce (Weisbrodt et al, 2017). The climate of the region is continental with a mean annual temperature of 6.8°C and a mean annual precipitation of 600 mm (Anon, 2017).…”

Section: Study Sitementioning

confidence: 99%

Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

Makri¹,

Lami²,

Tu³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

Abstract. Global spread of hypoxia and altered mixing regimes in freshwater systems is a growing major environmental concern. Climate change and human impact are expected to increasingly deteriorate aquatic ecosystems. The study of processes and drivers of such changes in the past provides a great asset for prevention and remediation in the future. We used a multi-proxy approach combining high-resolution Hyperspectral Imaging (HSI) pigment data, with specific HPLC chlorophylls and carotenoids to examine Holocene trophic state changes and anoxia evolution in meromictic Lake Jaczno, NE Poland. A redundancy analysis RDA including pollen-inferred vegetation cover, temperature and human impacts provides insight into specific conditions and drivers of changing trophic and redox states in the lake. Anoxic and sulfidic conditions established in Lake Jaczno after initial basin infilling 9500 years ago. Until 6700 cal BP, lake trophy was relatively low, water turbidity was high, and green sulfur bacteria (GSB) were abundant within the phototrophic community, suggesting a deep oxic–anoxic boundary and weak stratification. The period between 6700–500 cal BP is characterized by constantly increasing lake production and a gradual shift from GSB to purple sulfur bacteria (PSB), suggesting a shallower oxic–anoxic boundary and pronounced stratification. Yet, the presence of spheroidene and speroidenone in the sediments indicates intermittent anoxia. After 500 cal BP, increasing human impact, deforestation and intensive agriculture promoted lake eutrophication, with a shift to PSB dominance and establishment of permanent anoxia and meromixis. Our study unambiguously documents the legacy of human impact on processes determining eutrophication and anoxia.

show abstract

Contribution of non-pollen palynomorphs to reconstructions of land-use changes and lake eutrophication: case study from Lake Jaczno, northeastern Poland

Cited by 7 publications

References 43 publications

Tracking fire activity and post-fire limnological responses using the varved sedimentary sequence of Lake Jaczno, Poland

Tracking fire activity and post-fire limnological responses using the varved sedimentary sequence of Lake Jaczno, Poland

Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data

Contact Info

Product

Resources

About